Slab-forming attachment for calenders.



J. R. GAMMET i. SLAB FORMING ATTACHMENT FOR CALENDERS. APPLICATION FILERAUG. 8, 1913.

1,089,467, Patnted Mar. 10, 1914.

4 BHEBTS'SHEET 1.

J. R. GAMMETBR.

SLAB FORMING ATTACHMENT FUR CALENDERS.

APPLIQATmN FILED meme, 1913.

1,089,467, Patent-ed Mar. 10, 1914.

4 SHEETS-SHBT 2.

J. R. GAMMBTER.

SLAB FORMING ATTACHMENT FOR CALENDERS.

APPLICATION FILED AUG. 8, 1913.

Patented Mar. 10, 1914.

4 SHEETS-SHEET 3.

wi/hamwo J. GAiIIVlETER.

SLAB FORMING ATTACHMENT FOR CAL NDERS,

APPLICATION FILED AUG.B.1913

1,089,467, Patented Mar. 10, 1914.

4 SHEETS-SHEET 4 Wbimeowo: gmntm y/QZW sa A; 65532, k m T I PM...

'ferred form of my invention applied there UNITED STATES PATENT OFFICE.

JOHN R. GAMMETER, OF AKRON, OHIO, ASSIGNOR TO THE B. F. GOODRICH COMPANY, OENEW YORK, N. Y., A CORPORATION OF NEW YORK.

SLAJLFOBMING ATTACHMENT FOR CALENDERS.

Specification of Letters Patent.

Patented Mar. 10, 1914.

To all whom it may concern:

Be it known that I, JOHN R. GA.\[1\IETER, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Tm )rovements in Slab-Forming Attachments or Calenders, of which the following is a specification.

My invention relates to means for automatically forming a laminated band from a continuous stri of material. with plies haw ing non-coinci ent edges. It may be cinployed for example as a meins for imilding up a stepped rubber tread'slab for pneumatic tire shoes, and may then be embodied in the form of an automatic attachment for calenders. I

Of the accompanying drawings: Figure 1 represents a side elevation showing the rolls of a calendering machine having a pie to. Fig. 2 represents a front elevation. Fig. 3 represents a top plan view. Fig. 4 represents a plan view 0 one of the sets of cutters and a receiving drum with a completed slab. Fig. represents a cross-see tion of the slab.

In the drawings i0, 11 and 12 are the top, middle and bottom rolls of the calender which operate in the wcllltnown manner upon a batch of rubber 13 introduced between the top and middle rolls, which form the same into a sheet 14 encircling the mid dle roll ll, from which strips may be severed by means of the cutters and led off around the lower roll 12.

The slab-forming units are mounted in front of the calender, and there may he one or more of them used in. conjunction with the same calender. In the present instance, I have shown four units, each of which comprises a drum 15 whose circumference is substantially equal to the length of the longest slab which it may be desired to form, a pair of knives or cutters 16 which bear against the surface of the middle calender roll 11, and suitable means for mounting the drum and automatically controlling the lateral position of the knives.

The four drums are mounted on a truckframe 17 which is secured to the floor by means of bolts 18, and is provided with wheels 19 which end is it when'unbolted to be rolled away from its normal position with relation to the calender. The drums 15 are loosely journaled on shafts 20, each carried by a pair of arms 21 hung on a pivot-shaft 22, the drums being adapted to swing independently on said pivot-shaft toward and from the lower calender roll 12, and being frietionally driven from said lower roll through the intervening, stri or strips of rubber, the. drums being ield against the rolls by gravity. The arms 21 are formed with al'iutnients 21 which rest again t a stop-rail 17 on the truckframe when the drum is swung away from the lower calender roll,

On the rear side of the roll 12 are a series of presser rolls 23 corresponding in number and position to the receiving drums (one of said presser rolls being shown in Fig. l), and each of the drums 15 is provided with a presscr roll 24, mounted on rocker-arms 25 pivoted at 26, and urged'toward the drum surface by springs 27, these resser rolls being preferably cloth covere and their purpose being to smooth out the rubber s1 rips and prevent the formation of air blisters. Each drum is urll provided with a trip-stud 28, mounted on a rock-arm 2 which is held against, a sto by a strong spring 31, the latter yieiding only in case the trippin mechanism should jam;

The knives 16 of each pair are carried in holders on a pair of nuts 32 mounted on right and left screws 33, each pair of screws being formed on a sleeve which turns independently of the others on a shaft 34 common to the several sleeves. The nuts are rovided with forked arms 35 having a sh ing engagement with a guide-rod 36 which revents the nuts from turning. This guiderod is carried by a number of arms 37 which are loosely ban on the shaft 34 and supported by a ru' 38 from a pair of arms 39 pivoted at 40 to the side frames 41 of the calender, the rod 38 passing through slots 42 in the arms 40 and being ad ustably fixed by means of nuts 4'3 so that the outer ends of the arms 37 may be raised and lowered for the purpose of adjusting the trip wheels.

44 are star-wheels or trip-wheels, one for each drum 15, loosely mount d on studs 45 at the outer ends of he arms 37, each tripwheel having :1 sprorketwheel ill owl uhieh passes 2 chain 47 eennevtin it u :i sproeln twvheel on one (it the slut-w \rhieh marries u pair of he srreiw {i 4.) is an upstanding pin on the t p strei h of the chain it? co perziting with :1 step 50 adapted to be inserted in any oin- 0t number of holes ii-l formed in ill hereby the amount, of spread o it 1G and hence the maximum width if slab-strip is determined, and 52 n len of chain which is attached to and overt A the chain 47 and hangs down at the 'ele M the drum 15, whereby the knives nuiy be manually reset.

53 represents the completed slab.

54, 54 are fixed knives for tlllll'll'lillg the outer edges of the rubber sheet on roll it,

In operating any oi the slalwformin" units, the chain 52 is first pulled until 7 pin 49 on chain 47 come against th to, pin 50, and this turns the eorresp enling peril of right and left screws 33 in a ll f' z' tion to spread apart the hnires 16 The drum 15 will at first he swung L dj/ mm the lower calender roll '12 until the att nds 5. at the rear of the calender bus severed pulled oil an end of the strip cut by tlt knives 16 on the middle roll t] :nnl has up plied it to the surface (it the lower r ll 1 The attendant at the front then uppi [this end to the snrtaee of the drum '15 :zn l moves the bitter up nguiiist, the roll if! :7 as to cause the suiil (l 'UHt to be rotated h the roll. The iltlll.) 1.3 is started in such an angular position that when its trip-stu-ql reaches the star-wheel 4* the tll'lill. will have been ii'onipletely enrircletl by a strip nil rubber. Thus the inner or \VlllQSl ply ot the slab is laid on the drum. The tripstud then turm: the star-wheel one step t" i this uutoniatieiilly sets the knives l 2t hilt nearer together so as to cut the next uni rower ply, and so on until the narrowest er outermost, ply has been laid, whereupon ti uttentlnut pulls the drum 15 away trnu t a'r lower *ulentler roll, cuts thelzist ply transversely at a suitable point, savers the slut-- transversely and removes it from the drum, 'lhereupon another slab may he iuuneflizitelv started. It is obviousthnt the operators the (litlrrent units may have their slabs l5 (litl'erent stages, and the operation of the 'tllQlit'ltl may be rnrried on eoutinuouslyl It \\ill be apparent ithoul sprrinl lhn; ti-ution that it, insteinl of employing righi and left, srrmrsji l, both knives (it u pu l: were ronlrolh-il by n single thread. the \rhuhl both b .steppwl luti-rnll in the min ilirertiun illtlilll tlilliiffliiji their tlliltll 'l. from rurh other. h'urh it imule ul ope ition ("ouhl be useil I'or ninlting beveled m stepped edges on :1 rubber slub to be unnle into n tube, ueh *an inner till-e for n put-um;

tire. ()lhrr inoilitirutioiis eoulil also hitrn iiij xi i:

l in 1 mnrhine f r f rm ng hwiinateel is, the Palliilfiiltz'lllfllt ti iii-mils ori'ii'ag and feeding a, of levires for Putting a s! twin ,8???

drum for rm'eiring l rmtom stint cutting (fitl'lCQS lntenlly :it a predetermined point in the rotation of said drum.

2. In a machine f1; forming himinntetl slabs, the eoinbiinition nt' nienhs for supporting and feeding :2, sh et of materiel, a pair 01" lcni for cn tiwz a strip from zii l shzie, a (burn for rereiring the strip, and n'iesins. cont olled by the rotation of said irurn for uuten' ticnll displzu'ing said kn es in {I (l rwtirn parallel to the axis of the shun-1.

in a nuirhuie for forming laminated slabs. the mn'ibinziti(m wt means f r suporting and Fee ing sheet of material, a pair of .lniives for in a strip from ilt'lll l l fe receiving the strip, :nnl lllt'illim rontrolleil by the rotation of said drum for aflililfii e'lispltuiug said knives intently at the and lit sneer, 've rotations of the drum t'nr viirying the width of sue- (*t'SHil't p ies of the slab.

in a machine for forn'iing m ni tltQtl the combination of menus for supgnrt a! and fouling ii sheet, at material, a pan of kn es for suiting ti strip from saihl sheet, :1 drum fer rereiriin: Enid strip, sermv inerhrinisin tor (lisplnring Silltl knives laterally tir'wnrd and fr m each other, and tripping means (t llll'flllttl hy the r tation f the drum unit it 'l'ili'filllflg suiii screw IFHWJLEHISIH.

ste s, the

i lv dispr wine we or more of shil , litilliil tee tot-m n lm'ninateil of means t sup-- hee of mutt-rial, uery :1 ltl}') 1'C-- ti'till rl by the renutmn-Ktienlr 'lisnimns fer ltllt ill fif l plowin vii-i hnitt' lnl'm' v nninmlly r vrt' ne the 5min.

in :i nun-him or tot-plug laminated the an than (at i i \JHYIF feeling 1: it nn t izul. Pt

til i llS porting :irzl rt pair tit l n For wilting H H lp l lEi Sitltl sheet, :1 pun o! nuts win 'tml uu'n r llill to said toothed wheel, and a nut -on said screw connected with said knife.

8. In a machine for forming laminated slabs, the combination of means for supporting and feeding a sheet of material, a knife for slitting said sheet, a strip-receiving drum, means controlled by the rotation of the drum for laterally displacing said knife, means for manually resetting *the' which gears with said sprockets, a pin on said chain, an adjustable stop for engagementby said pin, and a manual member connected with said chain for operating the latter to reset the knives.

i dering machine having a sheet-carrying roll,

10. The combination of a rubber calenstrip-cutting means cooperating with said roll and including a laterally-displaceable knife, a drum for receivingseveral turns of the rubber strip, and means controlled by the rotation of said drum and controlling jside of said I ling the position of the latter.

the lateral position of said knife.

lli'llhe combination of a rubber calendering machine having sheet-carrying and strip carrying rolls, strip-cutting means coopc'ratingwith said sheet-Carr ing roll and including a laterally-displacea le knife, and 8;:St1'iP-IGC0lVlnY drum located on the same rolls as the'knife and control- 12. The combination 'of a rubber calender ing machine having sheet-carrying and strip-carrying rolls, strip-cutting means ineluding a shiftable knife, and a strip-rm eeiving drum frictionally drivlfff'from said stripcarrying roll through the intervening rubber strip and controlling the position of said knife.

13. The combination of a rubber calendering machine having sheet-carrying and strip-carrying rolls, strip-cutting means in eluding a shiftable lmife,.anda. strip reeeiving drum mounted for bodily movement toward and from said strip-carrying roll and controlling the position of said knife.

14:. The combination of a rubber calendering machine having sheet-carrying and strip-carrying rolls, strip-cutting means ineluding a shiftable knife, a strip-receiving drum frictionally driven from said strip-- carrying roll through the intervening rubber strip and controlling the position of said knife, and a pivoted rock-frame on which said drum is journaled, whereby the latter may be guided for bodily movement into and out of operative position.

15. The combination of a rubber calendering machine having sheet-carrying and strip-carrying rolls, strip-cutting means including a shiftablc knife, a str1p-rcceiving drum frictionally driven from said stripcarrying roll through the intervening rubber strip and 'controllin the position of said knife, a roller truck-trame carrying the drum and movable toward and from the calendering machine, and means for guiding the drum for bodily movement on said truckframe toward an from the strip-carrying roll.

In testimony whereof I have hereunto set my hand in th presence of two subscribing witnesses, this fifth day of August 1913.

JOHN R. GAMMETER.

Witnesses \VALTER K. Menus, Inna N. KmN. 

